My 1974 Citroen DS Super 5 has recently developed a fault, it refuses to idle. I can start it but have to hold the accelerator over a thousand rpm to keep it running. I noticed a vacuum pipe from the inlet manifold is off, but my car has been converted to electronic ignition and can't see where it would attach to the distributor. Help!!!
Dear Tony trans am,
Well it is a long time since I last looked under the bonnet of a DS Tony, But I would imagine that the vacuum pipe that you have there, would be supposed to fit back onto the small metal connection that is on your vacuum advance unit that is fitted to the side of your distributor. If you can,t locate it the place where that vacuum pipe should fit, you should try blocking the hole in the end of vacuum pipe with a screw, temporarily and see she should start like that.
Vince,
1992 Citroen BX TX i 1.6 auto with air con in White with 47,000 miles.
1988 SAAB classic 900 i with 3 spoke Ronals in rose quartz with 69,000 miles.
as Vince says firstly plug the end of the vacuum pipe,
ci dont know a lot about these injection systems but am learning as im in the process of sorting one out for someone,
i have fitted a new set of injectors at £600 quid
fitted a modern fuel pump which i have just got to plumb in the fuel return pipe with a three way union,
last time i went to see/fiddle with her i had her starting on her key, which up till then we had to crank her by pressing the solenoid ( mund your fingers ) intentionally ,
your could possibly be fuel pressure issue's,
Regards, malcolm.
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
addo wrote:A DSuper will be carby, Malc. It sounds to be under the thumb of Major Vacuum Leak.
ok Adam
so take the lid of the car, remove all the jets and give them and the rest of the carb a blast out with the are blow gun,
sound like the idle jet is blocked
regards malcolm
Regards, malcolm.
current ride a BX 1.7 TZD estate
1986 MK1 BX 1.9na D Auto(in Mothman Andy's stable )
layed up roppy 1.9TD XANT estate, now gone to meet her maker
purple and lilac metalic 2CV(VIOLET)registered to her in doors
1972 DS special been layed up aprox 31 years
I need to sort my DS out guys, for some reason she has become lazy rising leaking lots and doesn't, oil sender wire came off (but sorted that) and doesn't want to idle.
It just happened. I thought something may have pulled off as the oil sender wire seemed to come off as well. I was only getting an ice cream in Richmond park.
Dear Tony trans am,
Firstly, the vacuum pipe needed to be blocked, as it would have made the car run really weak and may have been too weak to start the engine.
Secondly, I would have to " ditto " what Malcolm has put as with cleaning the carburettor, you can do with " carb cleaner" aswell, which is good. But an air-line is" essential "to unblocking the jets, to make the car run properly. I would also take the chance, whilst you have the carb in pieces to check all the base gaskets where the carb joins with the inlet manifold. And I would also check the carb " top " gasket, the one fitted in between the two halves of the carb, as these can get cracked brittle with heat/age very easilly. I would also check the " accelerator " fuel pump diapham, if it has one, it is a small square block on the side of the carb about 1" square it is usually fitted to the carb body with four small screws and it has a lever underneath the pump that is attatched to the throttle spindle.
The Solex carburettors in the 70,s use to need blowing out with an airline, on quite a few occasions. On GS,/A,s they used to have a " fuel cut-off solenoid, powered by the ignion, which was fitted to stop the engines from " running-on " when you turn the engine off with the ignition key, however I don,t think your DS would have one of these fitted.
Vince,
1992 Citroen BX TX i 1.6 auto with air con in White with 47,000 miles.
1988 SAAB classic 900 i with 3 spoke Ronals in rose quartz with 69,000 miles.
I'm wondering if the fuel supply is compromised. More RPM means more pumping if it's still fitted with the mechanical pump. Beheading the carby immediately after stopping the engine should reveal a correctly full float chamber.
